On the characterization of a hitherto unreported icosahedral quasicrystal phase in additively manufactured aluminum alloy AA7075

S. K. Kairy, O. Gharbi, J. Nicklaus, D. Jiang, C. R. Hutchinson, N. Birbilis

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Abstract

Aluminum alloy AA7075 (Al-Zn-Mg-Cu) specimens were prepared using selective laser melting, also known as powder bed fusion additive manufacturing. In the as-manufactured state, which represents a locally rapidly solidified condition, the prevalence of a previously unreported icosahedral quasicrystal with 5-fold symmetry was observed. The icosahedral quasicrystal, which has been termed ν-phase (nu-phase), was comprised of Zn, Cu, and Mg.

Original languageEnglish
Pages (from-to)529-533
Number of pages5
JournalMetallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
Volume50A
Issue number2
DOIs
Publication statusPublished - 15 Feb 2019

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